should witness
Verbe régulier : witness - witnessed- witnessed
Traduction française : être témoin de - témoigner 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I should witness
you should witness
he should witness
we should witness
you should witness
they should witness 	I should be witnessing
you should be witnessing
he should be witnessing
we should be witnessing
you should be witnessing
they should be witnessing	I should have witnessed
you should have witnessed
he should have witnessed
we should have witnessed
you should have witnessed
they should have witnessed	I should have been witnessing
you should have been witnessing
he should have been witnessing
we should have been witnessing
you should have been witnessing
they should have been witnessing	

Négation 	
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I should not witness
you should not witness
he should not witness
we should not witness
you should not witness
they should not witness 	I should not be witnessing
you should not be witnessing
he should not be witnessing
we should not be witnessing
you should not be witnessing
they should not be witnessing	I should not have witnessed
you should not have witnessed
he should not have witnessed
we should not have witnessed
you should not have witnessed
they should not have witnessed	I should not have been witnessing
you should not have been witnessing
he should not have been witnessing
we should not have been witnessing
you should not have been witnessing
they should not have been witnessing	

Forme interrogative 	
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should I witness?
should you witness?
should he witness?
should we witness?
should you witness?
should they witness? 	should I be witnessing?
should you be witnessing?
should he be witnessing?
should we be witnessing?
should you be witnessing?
should they be witnessing? 	should I have witnessed?
should you have witnessed?
should he have witnessed?
should we have witnessed?
should you have witnessed?
should they have witnessed? 	should I have been witnessing?
should you have been witnessing?
should he have been witnessing?
should we have been witnessing?
should you have been witnessing?
should they have been witnessing? 	

Forme interro-négative 	
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should I not witness?
should you not witness?
should he not witness?
should we not witness?
should you not witness?
should they not witness? 	should I not be witnessing?
should you not be witnessing?
should he not be witnessing?
should we not be witnessing?
should you not be witnessing?
should they not be witnessing? 	should I not have witnessed?
should you not have witnessed?
should he not have witnessed?
should we not have witnessed?
should you not have witnessed?
should they not have witnessed? 	should I not have been witnessing?
should you not have been witnessing?
should he not have been witnessing?
should we not have been witnessing?
should you not have been witnessing?
should they not have been witnessing?